Does the series 3 Nike watch offer more than the 3 faces?

Hi

Yes - in addition to the exclusive, Nike-branded watch faces, Apple Watch Nike+ also includes all of the standard watch faces offered under watchOS for your model:

Faces and features

These can be added to the collection on your Apple Watch and customised with the complications of your choice (including none at all, if preferred):

• Customize your watch face
• Change your watch face - Apple Support